For casual and business the same as any westerner as Chinese people wear suits and others. However for ceremonial you might see Chinese women wear qipao, which is a can be seen as a symbo. Here are some pictures of the clothes
The first picture shows the modified ones
the second picutre showed the traditional style.
the third one showes the old hair style.
the buttons on qipao are specially made usually by hand.You can see the following picuture.